2/2 11:50:53.956 An action was blocked in combat because of taint from oUF - oUF_DiabloPartyHeaderUnitButton1:SetFrameStrata()
2/2 11:50:53.956 An action was blocked in combat because of taint from oUF - oUF_DiabloPartyHeaderUnitButton1:SetFrameLevel()
2/2 11:50:53.956 An action was blocked in combat because of taint from oUF - oUF_DiabloPartyHeaderUnitButton1:SetSize()
2/2 11:50:53.986 An action was blocked in combat because of taint from oUF - oUF_DiabloPartyHeaderUnitButton1:SetHitRectInsets()

That taintlog is pretty good actually. I forgot to remove the setsize string in party.lua which is not allowed for header units...(no clue why I forgot that because I set width/height in the spawn)